2939145931 has 4 divisors (see below), whose sum is σ = 2943606600. Its totient is φ = 2934685264.

The previous prime is 2939145901. The next prime is 2939145943. The reversal of 2939145931 is 1395419392.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2939145931 - 2²⁹ = 2402275019 is a prime.

It is a super-2 number, since 2×2939145931² = 17277157607427713522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2939145901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2229346 + ... + 2230663.

It is an arithmetic number, because the mean of its divisors is an integer number (735901650).

Almost surely, 2^2939145931 is an apocalyptic number.

2939145931 is a deficient number, since it is larger than the sum of its proper divisors (4460669).

2939145931 is an equidigital number, since it uses as much as digits as its factorization.

2939145931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4460668.

The product of its digits is 262440, while the sum is 46.

The square root of 2939145931 is about 54213.8905724354. The cubic root of 2939145931 is about 1432.4310175546.

The spelling of 2939145931 in words is "two billion, nine hundred thirty-nine million, one hundred forty-five thousand, nine hundred thirty-one".